That's so Raven: Rebel Raven - Book #15

When the principal of Baysidedecides to make all the students wear uniforms, Raven organizes a protest. Butwhen the students don’t stand behind her, Raven finds herself in detention withthe only people who did: the school bullies. Raven decides that she’s better offhanging out with the “bad” crowd than with friends who won’t back her up. Plus,while spending the afternoon at a spa, Raven disguises herself as a yogateacher to get an autograph from her favorite pop singer.